Search Results - "Hammad, Sherin"

Homogeneous liquid–liquid extraction as an alternative sample preparation technique for biomedical analysis by Hammad, Sherin F., Abdallah, Inas A., Bedair, Alaa, Mansour, Fotouh R.

“…Liquid‐liquid extraction is a widely used technique of sample preparation in biomedical analysis. In spite of the high pre‐concentration capacities of…”
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Experimental design approach for development of spectrofluorimetric method for determination of favipiravir; a potential therapeutic agent against COVID-19 virus: Application to spiked human plasma by Megahed, Safa M., Habib, Ahmed A., Hammad, Sherin F., Kamal, Amira H.

“…[Display omitted] •The first spectrofluorimetric method for determination of favipiravir which is a potential treatment of COVID-19 virus.•The developed method…”
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Menthol-assisted homogenous liquid-liquid microextraction for HPLC/UV determination of favipiravir as an antiviral for COVID-19 in human plasma by Abdallah, Inas A., Hammad, Sherin F., Bedair, Alaa, Mansour, Fotouh R.

“…•Menthol was, for the first time, used as a phase separating agent for HLLME of favipiravir from plasma.•Favipiravir could be incorporated in the hydrophilic…”
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Rapid microwave synthesis of N,S-doped carbon quantum dots as a novel turn off-on sensor for label-free determination of copper and etidronate disodium by El-Malla, Samah F., Elshenawy, Eman A., Hammad, Sherin F., Mansour, Fotouh R.

“…An environmentally-friendly, selective and rapid turn off-on fluorescent probe for both copper (Cu2+) and etidronate disodium (ETD) detection was derived from…”
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Quality by design paradigm for optimization of green stability indicating HPLC method for concomitant determination of fluorescein and benoxinate by Kamal, Amira H., Habib, Ahmed A., Hammad, Sherin F., Megahed, Safa M.

“…A green, robust and fast stability indicating chromatographic method has been developed for concomitant analysis of fluorescein sodium and benoxinate…”
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Green microwave-prepared N and S Co-doped carbon dots as a new fluorescent nano-probe for tilmicosin detection by Elshenawy, Eman A., El-Malla, Samah F., Hammad, Sherin F., Mansour, Fotouh R.

“…A straightforward, rapid, and selective fluorescent probe for determination of tilmicosin has been developed based on novel nitrogen and sulfur co-doped CDs…”
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Electrodeposition of Ni nanoparticles from deep eutectic solvent and aqueous solution promoting high stability electrocatalyst for hydrogen and oxygen evolution reactions by Elsharkawya, Safya, Hammad, Sherin, El-hallaga, Ibrahim

“…Nanostructured Ni films were synthesized from two distinct baths and were assessed as electrocatalysts for hydrogen evolution reaction (HER) and oxygen…”
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The effect of electrodeposition potential on catalytic properties of Ni nanoparticles for hydrogen evolution reaction (HER) in alkaline media by El-Hallag, Ibrahim, Elsharkawy, Safya, Hammad, Sherin

“…The fabrication of non-precious electrocatalyst for water splitting has a great potential. So, Ni electrocatalysts are considered one of the most auspicious…”
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Chitosan-based molecular imprinted polymer for extraction and spectrophotometric determination of ketorolac in human plasma by Mabrouk, Mokhtar, Hammad, Sherin F., Abdella, Aya A., Mansour, Fotouh R.

“…A selective chitosan-based ion exchange molecular imprinted polymer (MIP) was prepared for ketorolac (KET) using the sol-gel method and glutaraldehyde as a…”
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Recent Applications of Quantum Dots in Pharmaceutical Analysis by Belal, Fathalla, Mabrouk, Mokhtar, Hammad, Sherin, Ahmed, Hytham, Barseem, Aya

“…Nanotechnology has emerged as one of the most potential areas for pharmaceutical analysis. The need for nanomaterials in pharmaceutical analysis is…”
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Sugaring‐out induced homogeneous liquid‐liquid microextraction as an alternative mode for biological sample preparation: A comparative study by Abdallah, Inas A., Hammad, Sherin F., Bedair, Alaa, Mansour, Fotouh R.

“…Miniaturization of liquid‐liquid extraction is a growing field of sample preparation to reduce solvent consumption, protect the environment, and preserve…”
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Enantioselective chitosan-based racemic ketoprofen imprinted polymer: Chiral recognition and resolution study by Mabrouk, Mokhtar, Hammad, Sherin F., Abdella, Aya A., Mansour, Fotouh R.

“…•Racemic imprinting concept for chiral MIP preparation is introduced.•Enantioselective reuptake of S-KTP on racemic imprinted polymer is achieved.•RS-MIP and…”
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Applications of metal organic frameworks in dispersive micro solid phase extraction (D-μ-SPE) by Bedair, Alaa, Abdelhameed, Reda M., Hammad, Sherin F., Abdallah, Inas A., Mansour, Fotouh R.

“…•MOFs are highly porous crystalline material with impressively high surface area and variable shapes and sizes.•D-µ-SPE is a miniaturized form of D-SPE in…”
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Coupling of synchronous fluorescence spectroscopy with derivative amplitude outcomes for simultaneous determination of metoprolol succinate and olmesartan medoxomil in combined pharmaceutical preparation: Application in spiked human plasma by Kamal, Amira H., Hammad, Sherin F., Kamel, Doaa N.

“…[Display omitted] •For the first time, synchronous spectrofluorimetry coupled was used for determination of OLM &MET.•The developed method showed high…”
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A Critical Review of Analytical Applications of Chitosan as a Sustainable Chemical with Functions Galore by Mabrouk, Mokhtar, Hammad, Sherin F., Mansour, Fotouh R., Abdella, Aya A.

“…Biomass and biowastes stand as sustainable and cost-effective environmentally benign alternative feedstock. Chitosan is a biocompatible, bioactive, and…”
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A hybrid microcrystalline cellulose/metal-organic framework for dispersive solid phase microextraction of selected pharmaceuticals: A proof-of-concept by Abdelhameed, Reda, Hammad, Sherin F., Abdallah, Inas A., Bedair, Alaa, Locatelli, Marcello, Mansour, Fotouh R.

“…Solid phase microextraction (SPME) is considered simple, ecofriendly, sustainable, cost-effective and timesaving sample preparation mode in comparison with…”
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Area under the curve and ratio difference spectrophotometric methods with evaluation of the greenness for simultaneous determination of olmesartan medoxomil and metoprolol succinate by Kamel, Doaa N., Hammad, Sherin F., Kamal, Amira H.

“…•New methods were developed for simultaneous determination of olmesartan medoxomil and metoprolol succinate.•Area under the curve and ratio difference…”
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Design of experiment-oriented development of solvent-free mixed micellar chromatographic method for concomitant determination of metronidazole and ciprofloxacin hydrochloride by Hammad, Sherin F., Habib, Ahmed A., Kamal, Amira H., Megahed, Safa M.

“…A green, fast and robust solvent-free chromatographic method has been developed for concomitant analysis of ciprofloxacin HCl and metronidazole in bulk powder…”
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UV spectrophotometric methods for simultaneous determination of ketorolac tromethamine and olopatadine hydrochloride: Application of multiple standard addition for assay of ophthalmic solution by Hammad, Sherin F., Rady, Mona M., El-Malla, Samah F.

“…Ophthalmic preparations that contain ketorolac tromethamine (KET) and olopatadine HCl (OLO) are used to relieve seasonal allergies and allergic conjunctivitis…”
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Innovative spectrofluorimetric determination of vildagliptin based on a "switch off/on" NS-doped carbon dot nanosensor by Elshenawy, Eman A, El-Malla, Samah F, Hammad, Sherin F, Mansour, Fotouh R

“…A simple, fast, and green one-step microwave pyrolysis approach was proposed for the synthesis of highly fluorescent nitrogen/sulfur-doped carbon dots…”
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